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The vibration‐rotation energies of the linear X‐Y‐Z type molecule are derived according to a method suggested by Professor Harald H. Nielsen in a recent paper. By the proper substitutions the energy expressions are reduced to the ones appropriate for the XY 2 type molecule, and a comparison...
An investigation has been made of the quenching of cadmium resonance radiation (3261A) by a number of hydrocarbons and other gases. The following values of the quenching cross sections were obtained (in cm 2 × 10 16 ): H 2 3.54 1 − C 4 H 8 35.2 C 2 H 6 D 2 1.80 2 − C 4 H 8 30.6 C 3 H 8 NH 3...
The quantum yield of fluorescence of diacetyl, excited by radiation of λ4047 and λ4358, has been measured and found to be 0.145±0.03. It is approximately independent of pressure. On the other hand, the yield with excitation of λ3650, as first observed by Henriques and Noyes, increases...
The average repulsive potential between a hydrogen atom and a hydrogen molecule has been computed from experimental values of elastic collision cross sections for fast hydrogen atoms (with energies of 200 to 800 electron volts) scattered in room temperature molecular hydrogen. It was possible to...
The transference numbers for aqueous solutions of potassium bromide at 25°C have been determined by the moving boundary method. Cells with cadmium bromide and lithium bromide as cation indicators and with potassium iodate as anion indicator were employed. The measurements are more difficult than...
The correlation effect on the molecular distance distribution in a Bose‐Einstein gas is calculated as a function of volume and temperature, particularly for the case of degeneracy (condensation) of the gas. It is shown that, under certain conditions in the condensed state, the density as seen...
The conductivity of sintered pellets of lead chromate varies with the temperature in accordance with the Boltzmann‐type law σ ∝ exp(−1.48ev/ k T ) σ ∝ exp ( − 1.48 ev ∕ k T ) in the temperature range 700°C to 350°C and with the law σ ∝ exp(−0.60ev/ k T ) σ ∝ exp ( − 0.60...
The alpha‐form of sodium stearate, originally reported by Thiessen and Stauff, and of which a sample was made available to us, has been re‐examined and the data found to be in general conformity with those of the previous investigation. Re‐examination of their monoclinic betaform of sodium...
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